Molding machine



Feb. 16, 1937. D. M. JONES l 2,070,945

. MOLDING MACHINE i' Original Filed NOVY. 29, 1933 27 lNvENToR [J4/VIELM. JONES CFL Patented Feb. 16, 193'? UNITED STATES PATENT OFFICE MOLDINGMACHINE Daniel M. Jones, Troy, N. Y.

9 Claims.

This invention relates broadly to improvements in molding machinesadapted to compress sand about a pattern in the making of molds forcastings, known as squeeze machines or squeezers. More particularly, theinvention relates to match plates for squeeze machines of the kindadapted to be disposed between the cope and drag of a ilask and drilledwith holes to match the holes and pins in the flask. The patterns aremounted on this board or plate, the part of the pattern that extendsinto the drag being on one side of the plate and the cope section of thepattern being on the other side of the plate. Such match boards orplates are usually of metal and are used Ywhere a plurality of the sameor different small parts are to be cast in one operation. Heretofore, amatch plate was integral and required that a predetermined number of theparts be cast at the same time. This is sometimes disadvantageous when,for instance, the match plate contains the patterns for twocomplementary members, such as an upper and a lower bracket forming apair. If one of such pair is defective or spoiled in machining, a newpair must be cast, one of which is superfluous and wasted.

The present invention has, therefore, for an object a metal match plate,particularly adapted to squeeze machines, in which patterns areinterchangeable or replaceable to adapt the same to a wide variety ofuses. Accordingly, a frame is provided in which may be used removableand interchangeable match plate sections bearing the pattern sections.

Another object of the invention is a frame so constructed and arrangedas to receive plates of varying sizes so relatively related as to permitpatterns of different sizes on plate sections of proportionate area tobe interchangeably used at one and the same time. To this end, arectangular frame is adapted to receive a single plate section of theentire area of the interior of the frame when such is required, or twoplate sections each half the area or, by the addition of a median framemember, multiples of the plate sections each of proportionally smallerarea.

Still another object of the invention is removable or interchangeablematch plate sections for reception in the common frame of thisinvention.

The invention also seeks a match plate which is practical from thestandpoint of ease of manufacture and convenience and durability in use.

These and other objects of the invention and the means for theirattainment will be more apparent from the following detailed description(Cl. .Z2-157) taken in connection with the accompanying drawingillustrating various l embodiments by which the invention may berealized, and in which:

Figure 1 is a view showing, in plan, the frame forming part of the matchplate of this invention with metal plate sections therein of differentsizes to show the applicability of the device to the molding of manydifferent patterns at the same time;

Figure '2 is a section-al View taken in the plane indicated by the line2 2 of Figure 1 and showing the removable median frame member inposition for use with match plate sections representing half or less ofthe entire match plate area, and utilized also as a gate forming member;

Figure 3 is a view showing, in side elevation, that side frame member towhich the free end of the displaceable end frame member is secured,looking at said side on the line 3 3 of Figure 1;

Figure 4 is a View showing, in side elevation, on line 4 4 of Figure 1,the end frame member which is displaceable to permit the insertion andremoval of the replaceable match plate sections;

Figure 5 is a transverse sectional view, taken on the plane indicatedbythe line 5 5 of Figure 1;

Figure 6 is a fragmentary View taken on the line 6 6 of Figure 1 showingthe latching means securing the displaceable end frame member in closedposition; and

Figure 7 is a view similar to Figure 1, on a smaller scale, showing theapplication of the frame to the reception of one or more match platesections extending from side frame member to side frame member, themedian frame member being,in this case, removed.

A match plate for squeezer machines generally has the shape indicated bythe outline of the combined plate sections and frame of Figure '7 and isan integral plane member formed with holes I and I I to register withthe holes and pins in the cope and drag sections of the ask and on theplane upper and/or lower surfaces of the match plate are formed orremovably secured the pattern portions I 2 to be molded.

In accordance with this invention, a frame I4 II is adapted to removablyreceive-interchangeable match plate sections I9 22 upon which patternportions are carried.

The match plate frame, as illustrated, is rectangular and comprises arelatively stationary end frame member I 4 rigidlyjoined at one end to arelatively stationary side frame member I and rigidly joined at itsother end to a relatively stationary side frame member I6.

To the free end of the side frame member I5 is pivoted, as at 20, arelatively movable or displaceable end frame member I'I formed with atongue 2|, at its pivoted end, received in the bifurcated end 22 offrame member I5 and carrying, at its free end, a tongue 23 adapted to bereceivedl in the bifurcated or slotted free end 24 of the side framemember I 6, when the end member I'l is in closed position. The framemembers I4, I5, I6 and I'I are rectangular in cross-section.

The end member I'I may be detachably secured in closed position by anyconvenient latching devices. As shown, the tongue 23 carries,L at itsend, a bifurcated latching lever 26, the arms 21 of which embrace andare pivotally secured tothe tongue 23 as by rivet 29. At least one ofthe arms 21 of this lever I0 carries a latching detent 30 illustrated asa cam like surface engaged, when the lever is in lockingrpositi'on, in arecess 32 formed in the outersurtace of at least one of the ends 24 ofside frame member I6. If desired, the latch 26 may be held in lockingposition, say, by a'screw vorother detachable securing means indicatedat34Min Figure 1.

AThe frame members I4-I'I and latching lever 26 are convenientlycomposed of some light metal, such as aluminum or composition, and oneor al1 or the corners may be reenforced with a plate of some strongermaterial, such as steel. Thus, while thebifurcated ends 36 of the sideframe members may be integral with the said members, thetongues 38 may,if desired, be formed of some stronger metal, such as bronze or steelinserted in the end kframe `member I `4 vand/orY I'I. If preferred'thesideframe members I5, I6 may be of steel or other harder metal or alloyas may also, of course, the end frame members. The proper metals oralloys will be selected for wear and strength. Therend frame members I4and I'I are formed or Aotherwise provided with extensions v`4I! providedwith bushings 4I defining the holes I I and drilled with holes Il),which holes are adapted to register with the holes and pins in the copeand drag sections of thevflask, `as will be understood. 'I l'ie sideframe membersare formed with longitiidinally extending slots 44 adaptedto receive tongues '45 on the side edges of replaceable match platesections such, for instance, as are illustratedA invFi'gures 1 and 'I atI9, 2l), 2I and 22. Such tongue and groove connections, of course, areonly one of many interlocking means adaptable for this purpose. InFigure '7, a single match plate section is shown occupying the entirespace within the frame because the pattern I2 is of a size to requirevit. If`, `however, somewhat smaller patterns are to be molded, two matchplate sections of equal area defined by the dot and dash line`48 may beinserted, side by side in the frame, at the vsaine time. Obviously,smaller or proportionately different sized match plate sectionsfollowing the same principle may be included in the frame. Thus eachplatesection may carry one or more dierent patterns, `as desired. I

Where. a number o f`different; small patterns arelto beY mtillgqii atone andthe same time, si'riallervand, variously shaped match platesections may be utilized, as 'shown in Figure 1.

Thus,-if;six different patterns are to be molded,

match plate sections suchasth'e section I9 may be sed, if desired. Inthisevenamedian frame member 50canbejused.. .It is des' ably'composed'fbra'ssor other relatively "strdngmetal orV alloy.

act/col The median frame member 50 is grooved on opposite sides, as at52, to receive the tongues 54 on opposite edges of match plate sectionssuch as I9, 2U and/ or ZI. The match plate sections are also providedwith tongues 46 for reception in the grooves 44 of the side. framemember I5, I6. On the median line of the frame, each end frame member,on its inner side is notched in its upper and lower surfaces as at 58 todefine a tongue 59 therebetween. Each end of the median frame member 50is bifurcated by a horizontal slot 60 and tapered, as at 6I. The medianframe member 5I) is retained in position by engaging the tongues' 59 onthe frame members in the slots 6B ofv the median member, the taperedends 6I oaf the median member positioning the latter againstdisplacement by being received in the recesses 58.

Where a plurality of small molds are to be use duand the castings madein one operation, a @sermn -gatei'sprovided for all the match platesections. The median rframe member conveniently serves to form thevgate.Thus it may carry either integral therewith or removably secured theretoVa gate forming member 64 on its upper surface'. Irrthe pattern is suchthat it must be gated in the drag also, a similar gate forming member 66may be `secured beneath the median member. k v N TheY 'shape oftheseveral match plate sections illustrated in the drawing are given byway of example only to 'show the wide variety of shapes and sizespossible to meet particular conditions. Su'ice it to say that when thedisplaceable end ifi is unlatched and opened and the desired match platesections 'slipped Vinto place by sliding the sections inwardly from theopen end with the Atongues on the sections in the grooves in the frameand the frame again closed, that a combined composite match plate isformed which can be used in the customary manner in squeezer machines. vVarious mcdications Will occur to those skilled in the art in thecomposition, configuration and disposition of the component elementsgoing to make up the invention as a whole, as well as in the selectionand useof kthe requisite parts for the purpose at hand and in thesubstitution of elements accomplishing equivalent results and nolimitation is intended by the phraseology of the foregoing descriptionor illustrations in the accompanying drawing.

1. In a match plate for squeeze machines, ln combination, a.Yrectangular frame comprising two 'sid'e'ir'ame members andone end framemember xe'dl'y secured together, an end frame member pivotally securedat on'eend to the free end of a :side frame member, means having oneelement carried bythe pivotally secured end member and a r"enactingelement on the other side frame member to detach'ably'szecur'e the outerend of the pivot'ed end frame member to the free end of the other sideframe member, means to reenforce the corners of the frame, a removablemedian frame member extending parallel to the two side frame members,means to removably'secure the'respective `ends of said median framemember to the respective end' members, the inner faces of Vatleast :oneApair,V of 'opposed vframe members Ybeing grboved, the side "faces of'said median frame member' being gro'oved, atleast one match plate"sectionffan'd'atleast onet'ong'ue formed on opposed' edges of Vamatch'p'latesection forrecep- 'tion""in"the grooves.

2. In a match plate for squeeze machines, in combination, a rectangularframe comprising two side frame members and one end frame member fixedlysecured together, an end frame member pivotally secured at one end tothe free end of a side frame member, means to detachably secure theouter end of the pivoted end frame member to the free end of the otherside frame member, a median frame member extending parallel to the twoside frame members, means to removably secure the respective ends ofsaid median frame member to the respective end members, the inner facesof at least one pair of opposed frame members being grooved, the sidefaces of said median frame members being grooved, at least one matchplate section and at least one tongue formed on opposed edges of a matchplate section for reception in the grooves.

3. A founding device comprising a frame having two apertures, eachhaving a single open side; a plurality of match plates having a tongueand slot connection with the Walls of said apertures and adapted to beplaced therein from the open side of the apertures; a pivotally mountedcross bar on the frame adapted to be moved into a position to close bothof the open sides; and means to lock said bar in the closed position,and to thereby maintain the match plates in a locked operative positionrelative to the frame.

4. A founding device comprising a three-sided main frame having a singleopening for accommodating a single row of one 0r more interchangeablelarge size match plates; a dividing bar shaped for connection to themain frame and when so connected dividing said single opening into aplurality of openings, each having a single open side, for locating andsupporting a plurality of rows of interchangeable small size matchplates.

5. A founding device comprising a three-sided main frame having a singleopening therein which is adapted to locate and support a single row ofone or more interchangeable large size match plates; a combinationdividing bar and main gate adapted to divide said single opening into aplurality of openings for locating and supporting a plurality of rows ofinterchangeable small size match plates, so that extension gates on thesmall plates match with the main gate.

6. A founding device comprising a three-sided main frame forming asingle aperture for receiving and the walls of which support a singlerow of one or more interchangeable large size match plates; means fordividing said single aperture main frame to form a double three-sidedaperture for receiving and the walls of which support a double row ofone or more interchangeable small size match plates; and a cross barforming a fourth wall for both of said threesided apertures and adaptedto hold said match plates in place.

'7. A founding device comprising a three-sided main frame forming asingle aperture for receiving and the walls of which support a singlerow of one or more interchangeable large size match plates; means fordividing said single aperture main frame to form a double three-sidedaperture for receiving and the walls of which support a double row ofone or more interchangeable small size match plates; a cross bar forminga, fourth wall for both of said three-sided apertures and adapted tohold said match plates in place; and means for locking said cross bar inits match plate holding position.

8. A founding device, comprising a three-sided main frame having asingle opening for accommodating a single row of one or moreinterchangeable large size match plates; a dividing bar shaped forconnection to the main frame and when so connected dividing said singleopening into a plurality of three-sided apertures for locating andsupporting a plurality of rows of interchangeable small size matchplates; a cross bar having a pivotal connection with said frame andadapted to swing into a position across the open sides of said doublethree-sided aperture and thereby form two four-sided apertures; and

a tongue and slot connection between said dividing bar and cross bar forsupporting the dividing bar against vertical movement and locating andsupporting it laterally with respect to the main frame.

9. A founding device, comprising a frame having two apertures, each ofwhich has an open side, and separated by a dividing bar; a plurality ofmatch plates having a tongue and slot connection with the Walls of saidapertures; a cross bar adapted to be moved into a position to close bothof the open sides of the frame; means to lock said bar in frame-closingposition; and a tongue and slot connection between said dividing bar andthe cross bar for supporting the dividing bar against vertical movementand for 1ocating and supporting it laterally with respect to the frame.

DANIEL M. JONES.

